Question

Are the statements true or false -

Statement-1: The dihedral angle of H₂O₂ in gas is 90°.

Statement-2: Dihedral angle of H₂O₂ in solid is 111°.

• A. True, True
• B. True, False
• C. False, True
• D. False, False

Answer 1

The correct option is D

False, False

Statement-1: The dihedral angle of H₂O₂ in gas is 90°.

The change in dihedral angle in the solid and gaseous phase is due to the difference in the intermolecular forces. So, statement-1 is incorrect and it should have a larger bond angle.

Statement-2: Dihedral angle of H₂O₂ in solid is 111°.

In the solid state, there exists hydrogen bonding so the dihedral angle becomes smaller compared to a gaseous state. Hence, statement-2 is also incorrect and it should have a smaller bond angle.

So, option D is correct.